||The first carbon fiber class A exterior body panel on an
OEM vehicle priced below $100K with a production volume > 2,000 per year.
Weight reduction of 33% compared to a standard Corvette hood.
|Most Innovative Feature:
||The first carbon fiber Class A exterior body panel on an
OEM vehicle priced below $100K at a production volume greater than
|Other Innovative Features:
||The unidirectional carbon fiber outer panel is bonded to a
hybrid carbon fiber/low density SMC inner panel.
|What Forming Process?
||Hand lay-up on Invar tooling, vacuum bag & autoclave cure
on the outer panel. Compression molding on the inner panel.
|First Time Process Used:
||Yes, for a major OEM. The process has previously been
used only for exotic sports cars and racing vehicles.
||Standard SMC for the outer panel, low density SMC for the
inner panel, compression molded.
||First automotive production use of Invar tooling.
|New Material Developments:
||Fast curing epoxy prepreg resin system (10 minute cure
versus 120 minutes typical of aerospace systems used for exotic and racing
||The carbon fiber hood weighs 4.8Kg (10.6 lb) less than a
standard Corvette hood. This represents a 33% mass reduction.
||Tooling costs were $1.9 million lower than compression
molding tooling for all parts.
|Direct Consumer Benefit:
||Due to the reduction in mass, the vehicle's performance is
increased. HP/Kg is increased, resulting in faster acceleration and
lower fuel consumption.
|Translates to Other Vehicles?:
||Yes, extensions of this application/technology are in
development on other vehicle lines at GM.